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The report details the expansion of solar energy in the U.S., focusing on rooftop photovoltaic (PV) systems, large-scale PV, and concentrating solar power (CSP). It highlights significant cost reductions, the role of state and federal incentives, and the environmental benefits of transitioning from fossil fuels to solar, while addressing grid integration challenges and land-use impacts.

The report argues that Michigan can affordably achieve a 32.5 percent renewable electricity standard by 2030, which would drive $9.5 billion in investment and reduce CO2 emissions by 65.4 million tons with minimal impact on retail electricity prices.

The report finds that weather-related power outages in the U.S. have increased significantly, with weather causing 80% of all major outages between 2003 and 2012. It identifies the Midwest and East as particularly vulnerable regions and argues that climate change acts as a 'threat multiplier,' increasing the frequency and intensity of storms, heat waves, and flooding that strain an aging electrical infrastructure.

The 2013 update to the 'Ripe for Retirement' report identifies that up to 329 coal-fired generators (58.7 GW) in 38 U.S. states are no longer economically competitive with existing natural gas plants, and up to 71 GW are uncompetitive with new wind power. These units, combined with those already retired or announced for retirement, represent more than one-third of the country's coal-generating capacity. The analysis suggests that a combination of renewable energy, energy efficiency, and underutilized natural gas plants can replace this capacity, though the authors warn against overdependence on natural gas due to climate and economic risks.

The report examines the risks associated with unconventional oil and gas development, specifically hydraulic fracturing, in the United States. It identifies significant threats to groundwater and surface water quality, air pollution, and induced seismic activity from wastewater injection. The authors highlight how corporate and political interference—including 'trade secret' exemptions and non-disclosure agreements—hampers scientific research and public knowledge. It critiques the 'patchwork' of state laws and federal loopholes, such as the 'Halliburton loophole,' and recommends mandatory baseline monitoring, full chemical disclosure, and the closing of federal regulatory gaps to protect public health and the environment.

The report argues that the current U.S. agricultural landscape is dominated by corn and soybeans due to federal subsidies, which contradicts national nutritional goals. Using economic modeling, the authors find that aligning production with healthy dietary guidelines would significantly increase fruit and vegetable acreage while reducing cereal grain production. Such a transition would likely improve public health, reduce environmental degradation from monocropping and livestock operations, and create new economic opportunities for farmers, particularly in the Midwest.

The U.S. Highway Trust Fund (HTF), which relies on federal fuel taxes that have not been adjusted since 1993, is facing insolvency due to rising costs and declining fuel consumption. The document argues that current funding is insufficient, contributing to a 'D' grade for national infrastructure and an annual funding gap of $112 billion. It evaluates several solutions, including indexing fuel taxes to inflation or construction costs, increasing the per-gallon tax rate, and transitioning to a vehicle miles traveled (VMT) fee to better align costs with infrastructure wear, particularly from heavy trucks.

The U.S. Highway Trust Fund (HTF), which relies on fuel taxes unchanged since 1993, faces insolvency due to rising costs and declining fuel consumption. The document argues that current funding is insufficient to maintain a state of good repair, citing a $112B annual funding gap. It evaluates several solutions, including indexing fuel taxes to inflation, increasing the per-gallon tax rate, implementing vehicle miles traveled (VMT) fees, or shifting to a fuel sales tax, while highlighting the interdependence of highway and transit systems for economic efficiency.

The report argues that state renewable electricity standards (RES) are effective market-based tools that have driven significant growth in wind and solar capacity across the U.S. with minimal cost impacts on consumers. It highlights that these policies stimulate local economies through job creation in installation and manufacturing, provide new revenue streams for rural landowners, and stabilize electricity rates by removing reliance on volatile fossil fuel markets. While noting strong compliance rates, the document identifies transmission infrastructure, market oversupplies, and political opposition as primary challenges to further expansion.

The report examines the environmental, logistic, and infrastructural barriers to commercializing cellulosic ethanol from corn stover in the US, concluding that the country will likely fall short of RFS2 mandates.

The Union of Concerned Scientists reports that in 2012, the NRC oversaw 14 'near-misses'—events increasing core meltdown risk by at least 10-fold—at U.S. nuclear plants. The report argues that the NRC frequently fails to enforce existing regulations, such as allowing the Palisades Nuclear Plant to operate for nearly a month despite cooling water leaks that required shutdown within six hours. It also highlights a significant perception gap between NRC senior management and staff regarding the agency's internal safety culture, where half of the workforce reported negative reactions from supervisors after raising safety concerns.

The Union of Concerned Scientists identifies hundreds of U.S. coal generators as 'ripe for retirement' due to high operating costs and vulnerability to 'energy-water collisions.' Many of these plants rely on once-through cooling systems that withdraw massive amounts of water and are subject to strict EPA temperature discharge limits. The report argues that replacing these aging plants with renewables or energy efficiency would significantly reduce national water withdrawals and consumption, particularly in states like Alabama, Maryland, Michigan, and Wisconsin.

The Union of Concerned Scientists identifies a significant number of U.S. coal-fired power plants that are economically uncompetitive compared to natural gas and wind power. The report argues that retiring these plants, along with those already scheduled for closure, would improve public health and reduce carbon emissions without jeopardizing grid reliability.

The Union of Concerned Scientists identifies a range of 16 to 32 coal-fired generating units in Michigan as economically uncompetitive compared to natural gas and renewable energy. The report highlights that 87 percent of the state's coal capacity exceeds its 30-year design lifetime, and many of these plants lack modern pollution controls, contributing significantly to public health issues and carbon emissions. The document advocates for retiring these plants in favor of wind, solar, and energy efficiency to reduce CO2 emissions by up to 18.7 million tons annually and stimulate the state's clean energy economy.

The report finds that electric vehicles (EVs) in the United States generally produce lower global warming emissions than average gasoline vehicles, though the extent of the benefit varies by regional electricity grid mix. It also demonstrates that EVs offer significant annual fuel-cost savings, which can be further maximized through time-of-use (TOU) electricity rate plans.

The document examines 60 years of summer weather data in the US Midwest, finding that hot and humid air masses are becoming more frequent while cooler air masses are declining. Analysis of both large cities and smaller rural counterparts suggests these trends are driven by broader climate change rather than solely by urban heat island effects, with nighttime temperatures warming faster than daytime temperatures.

The report analyzes 15 significant safety-related 'near-misses' at U.S. nuclear plants in 2011, arguing that many resulted from owners tolerating known safety problems. While it highlights successful NRC interventions at the Fort Calhoun, Hatch, and LaSalle plants, it criticizes the agency for allowing 47 reactors to operate in violation of fire-protection regulations and 27 reactors to operate with deficient seismic protection. The author contends that the NRC often focuses on fixing individual equipment failures rather than addressing the systemic weaknesses in owners' testing and inspection regimes.

A coalition of environmental organizations argues that the EPA's proposed rules for the oil and gas industry are insufficient. They demand the direct regulation of methane, the inclusion of existing sources, the elimination of exemptions for certain wells, and the regulation of hydrogen sulfide and particulate matter. The coalition also calls for more stringent toxic air pollutant limits and a more comprehensive health risk assessment for vulnerable populations.

The report finds that U.S. thermoelectric power plants withdrew between 60 billion and 170 billion gallons of freshwater daily in 2008, with coal plants accounting for the majority of this use. It identifies significant regional disparities in water intensity, noting that plants in the East generally withdraw more water due to a higher prevalence of once-through cooling. The analysis reveals that power plants contributed to water-supply stress in 20% of the 400 stressed watersheds identified. Furthermore, the report highlights critical gaps and inaccuracies in U.S. Energy Information Administration (EIA) data, including the total absence of reporting from the nuclear fleet. It argues that climate change and population growth will exacerbate these stresses, urging a shift toward low-water cooling technologies and low-carbon energy sources to ensure grid reliability and ecosystem health.

The report finds that U.S. power plants withdraw massive volumes of freshwater, with coal and nuclear plants being the most water-intensive. This demand contributes to water-supply stress in hundreds of watersheds and is exacerbated by droughts and heat waves. The authors highlight significant gaps and inaccuracies in EIA reporting and advocate for 'water-smart' energy choices, such as dry cooling and low-water renewables, to ensure energy reliability and water security.